Canyoutellusmore___(precise)whathappenedlastnight?
Itwillbeinterestingtoseewhat’sgoingtohappenatthenext________(elect).
一平面简谐波在弹性媒质中传播．当媒质中某质元经过平衡位置时，它的（）
We_____knowledgefromourfamilies,schools,jobs,andthemassmedia
Ifyouhadbeeninbetterhealth,we___(allow)youtojointheminthework.
